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// Copyright (c) 2018-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <interfaces/node.h>
#include <addrdb.h>
#include <banman.h>
#include <chain.h>
#include <chainparams.h>
#include <init.h>
#include <interfaces/chain.h>
#include <interfaces/handler.h>
#include <interfaces/wallet.h>
#include <net.h>
#include <net_processing.h>
#include <netaddress.h>
#include <netbase.h>
#include <node/context.h>
#include <node/ui_interface.h>
#include <policy/feerate.h>
#include <policy/fees.h>
#include <policy/settings.h>
#include <primitives/block.h>
#include <rpc/server.h>
#include <shutdown.h>
#include <support/allocators/secure.h>
#include <sync.h>
#include <txmempool.h>
#include <util/check.h>
#include <util/ref.h>
#include <util/system.h>
#include <util/translation.h>
#include <validation.h>
#include <warnings.h>
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <univalue.h>
#include <boost/signals2/signal.hpp>
namespace interfaces {
namespace {
class NodeImpl : public Node
{
public:
NodeImpl(NodeContext* context) { setContext(context); }
void initLogging() override { InitLogging(*Assert(m_context->args)); }
void initParameterInteraction() override { InitParameterInteraction(*Assert(m_context->args)); }
bilingual_str getWarnings() override { return GetWarnings(true); }
uint32_t getLogCategories() override { return LogInstance().GetCategoryMask(); }
bool baseInitialize() override
{
return AppInitBasicSetup(gArgs) && AppInitParameterInteraction(gArgs) && AppInitSanityChecks() &&
AppInitLockDataDirectory() && AppInitInterfaces(*m_context);
}
bool appInitMain(interfaces::BlockAndHeaderTipInfo* tip_info) override
{
return AppInitMain(m_context_ref, *m_context, tip_info);
}
void appShutdown() override
{
Interrupt(*m_context);
Shutdown(*m_context);
}
void startShutdown() override
{
StartShutdown();
// Stop RPC for clean shutdown if any of waitfor* commands is executed.
if (gArgs.GetBoolArg("-server", false)) {
InterruptRPC();
StopRPC();
}
}
bool shutdownRequested() override { return ShutdownRequested(); }
void mapPort(bool use_upnp) override
{
if (use_upnp) {
StartMapPort();
} else {
InterruptMapPort();
StopMapPort();
}
}
bool getProxy(Network net, proxyType& proxy_info) override { return GetProxy(net, proxy_info); }
size_t getNodeCount(CConnman::NumConnections flags) override
{
return m_context->connman ? m_context->connman->GetNodeCount(flags) : 0;
}
bool getNodesStats(NodesStats& stats) override
{
stats.clear();
if (m_context->connman) {
std::vector<CNodeStats> stats_temp;
m_context->connman->GetNodeStats(stats_temp);
stats.reserve(stats_temp.size());
for (auto& node_stats_temp : stats_temp) {
stats.emplace_back(std::move(node_stats_temp), false, CNodeStateStats());
}
// Try to retrieve the CNodeStateStats for each node.
TRY_LOCK(::cs_main, lockMain);
if (lockMain) {
for (auto& node_stats : stats) {
std::get<1>(node_stats) =
GetNodeStateStats(std::get<0>(node_stats).nodeid, std::get<2>(node_stats));
}
}
return true;
}
return false;
}
bool getBanned(banmap_t& banmap) override
{
if (m_context->banman) {
m_context->banman->GetBanned(banmap);
return true;
}
return false;
}
bool ban(const CNetAddr& net_addr, int64_t ban_time_offset) override
{
if (m_context->banman) {
m_context->banman->Ban(net_addr, ban_time_offset);
return true;
}
return false;
}
bool unban(const CSubNet& ip) override
{
if (m_context->banman) {
m_context->banman->Unban(ip);
return true;
}
return false;
}
bool disconnectByAddress(const CNetAddr& net_addr) override
{
if (m_context->connman) {
return m_context->connman->DisconnectNode(net_addr);
}
return false;
}
bool disconnectById(NodeId id) override
{
if (m_context->connman) {
return m_context->connman->DisconnectNode(id);
}
return false;
}
int64_t getTotalBytesRecv() override { return m_context->connman ? m_context->connman->GetTotalBytesRecv() : 0; }
int64_t getTotalBytesSent() override { return m_context->connman ? m_context->connman->GetTotalBytesSent() : 0; }
size_t getMempoolSize() override { return m_context->mempool ? m_context->mempool->size() : 0; }
size_t getMempoolDynamicUsage() override { return m_context->mempool ? m_context->mempool->DynamicMemoryUsage() : 0; }
bool getHeaderTip(int& height, int64_t& block_time) override
{
LOCK(::cs_main);
if (::pindexBestHeader) {
height = ::pindexBestHeader->nHeight;
block_time = ::pindexBestHeader->GetBlockTime();
return true;
}
return false;
}
int getNumBlocks() override
{
LOCK(::cs_main);
return ::ChainActive().Height();
}
uint256 getBestBlockHash() override
{
const CBlockIndex* tip = WITH_LOCK(::cs_main, return ::ChainActive().Tip());
return tip ? tip->GetBlockHash() : Params().GenesisBlock().GetHash();
}
int64_t getLastBlockTime() override
{
LOCK(::cs_main);
if (::ChainActive().Tip()) {
return ::ChainActive().Tip()->GetBlockTime();
}
return Params().GenesisBlock().GetBlockTime(); // Genesis block's time of current network
}
double getVerificationProgress() override
{
const CBlockIndex* tip;
{
LOCK(::cs_main);
tip = ::ChainActive().Tip();
}
return GuessVerificationProgress(Params().TxData(), tip);
}
bool isInitialBlockDownload() override { return ::ChainstateActive().IsInitialBlockDownload(); }
bool getReindex() override { return ::fReindex; }
bool getImporting() override { return ::fImporting; }
void setNetworkActive(bool active) override
{
if (m_context->connman) {
m_context->connman->SetNetworkActive(active);
}
}
bool getNetworkActive() override { return m_context->connman && m_context->connman->GetNetworkActive(); }
CFeeRate estimateSmartFee(int num_blocks, bool conservative, int* returned_target = nullptr) override
{
FeeCalculation fee_calc;
CFeeRate result = ::feeEstimator.estimateSmartFee(num_blocks, &fee_calc, conservative);
if (returned_target) {
*returned_target = fee_calc.returnedTarget;
}
return result;
}
CFeeRate getDustRelayFee() override { return ::dustRelayFee; }
UniValue executeRpc(const std::string& command, const UniValue& params, const std::string& uri) override
{
JSONRPCRequest req(m_context_ref);
req.params = params;
req.strMethod = command;
req.URI = uri;
return ::tableRPC.execute(req);
}
std::vector<std::string> listRpcCommands() override { return ::tableRPC.listCommands(); }
void rpcSetTimerInterfaceIfUnset(RPCTimerInterface* iface) override { RPCSetTimerInterfaceIfUnset(iface); }
void rpcUnsetTimerInterface(RPCTimerInterface* iface) override { RPCUnsetTimerInterface(iface); }
bool getUnspentOutput(const COutPoint& output, Coin& coin) override
{
LOCK(::cs_main);
return ::ChainstateActive().CoinsTip().GetCoin(output, coin);
}
WalletClient& walletClient() override
{
return *Assert(m_context->wallet_client);
}
std::unique_ptr<Handler> handleInitMessage(InitMessageFn fn) override
{
return MakeHandler(::uiInterface.InitMessage_connect(fn));
}
std::unique_ptr<Handler> handleMessageBox(MessageBoxFn fn) override
{
return MakeHandler(::uiInterface.ThreadSafeMessageBox_connect(fn));
}
std::unique_ptr<Handler> handleQuestion(QuestionFn fn) override
{
return MakeHandler(::uiInterface.ThreadSafeQuestion_connect(fn));
}
std::unique_ptr<Handler> handleShowProgress(ShowProgressFn fn) override
{
return MakeHandler(::uiInterface.ShowProgress_connect(fn));
}
std::unique_ptr<Handler> handleNotifyNumConnectionsChanged(NotifyNumConnectionsChangedFn fn) override
{
return MakeHandler(::uiInterface.NotifyNumConnectionsChanged_connect(fn));
}
std::unique_ptr<Handler> handleNotifyNetworkActiveChanged(NotifyNetworkActiveChangedFn fn) override
{
return MakeHandler(::uiInterface.NotifyNetworkActiveChanged_connect(fn));
}
std::unique_ptr<Handler> handleNotifyAlertChanged(NotifyAlertChangedFn fn) override
{
return MakeHandler(::uiInterface.NotifyAlertChanged_connect(fn));
}
std::unique_ptr<Handler> handleBannedListChanged(BannedListChangedFn fn) override
{
return MakeHandler(::uiInterface.BannedListChanged_connect(fn));
}
std::unique_ptr<Handler> handleNotifyBlockTip(NotifyBlockTipFn fn) override
{
return MakeHandler(::uiInterface.NotifyBlockTip_connect([fn](SynchronizationState sync_state, const CBlockIndex* block) {
fn(sync_state, BlockTip{block->nHeight, block->GetBlockTime(), block->GetBlockHash()},
GuessVerificationProgress(Params().TxData(), block));
}));
}
std::unique_ptr<Handler> handleNotifyHeaderTip(NotifyHeaderTipFn fn) override
{
return MakeHandler(
::uiInterface.NotifyHeaderTip_connect([fn](SynchronizationState sync_state, const CBlockIndex* block) {
fn(sync_state, BlockTip{block->nHeight, block->GetBlockTime(), block->GetBlockHash()},
/* verification progress is unused when a header was received */ 0);
}));
}
NodeContext* context() override { return m_context; }
void setContext(NodeContext* context) override
{
m_context = context;
if (context) {
m_context_ref.Set(*context);
} else {
m_context_ref.Clear();
}
}
NodeContext* m_context{nullptr};
util::Ref m_context_ref;
};
} // namespace
std::unique_ptr<Node> MakeNode(NodeContext* context) { return MakeUnique<NodeImpl>(context); }
} // namespace interfaces
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